David, you should be able to get citrus budwood from UCR CCPP. Mr Texas has ordered budwoods from California's CCPP before. The UCR CCPP program have phyto sanitary certificates and the facilites are monitored and the outbound budwoods are inspected by the USDA and the CDFA. But you have to check with your state's Dept of Agriculture about such orders. Some of the citruses in UCR's collections came from Louisiana and the CCPP sells to out-of-state propagators providing they have appropriate import permits. If you got them from the budwood program of CCPP, you can follow-up to certify your tree as a foundation rootstock for you to register locally and propagate from. One of the requirements of foundation tree is that it should come from USDA certified propagators such as that of CCPP. You may have an equivalent program in your state.